Add --move-to-nearest-code / target.move-to-nearest-code options

Summary:
This option forces to only set a source line breakpoint when there is an exact-match

This patch includes the following commits:
# Add the -m/--exact-match option in "breakpoint set" command
## Add exact_match arg in BreakpointResolverFileLine ctor
## Add m_exact_match field in BreakpointResolverFileLine
## Add exact_match arg in BreakpointResolverFileRegex ctor
## Add m_exact_match field in BreakpointResolverFileRegex
## Add exact_match arg in Target::CreateSourceRegexBreakpoint
## Add exact_match arg in Target::CreateBreakpoint
## Add -m/--exact-match option in "breakpoint set" command
# Add target.exact-match option to skip BP if source line doesn't match
## Add target.exact-match global option
## Add Target::GetExactMatch
## Refactor Target::CreateSourceRegexBreakpoint to accept LazyBool exact_match (was bool)
## Refactor Target::CreateBreakpoint to accept LazyBool exact_match (was bool)
# Add target.exact-match test in SettingsCommandTestCase
# Add BreakpointOptionsTestCase tests to test --skip-prologue/--exact-match options
# Fix a few typos in lldbutil.check_breakpoint_result func
# Rename --exact-match/m_exact_match/exact_match/GetExactMatch to --move-to-nearest-code/m_move_to_nearest_code/move_to_nearest_code/GetMoveToNearestCode
# Add exact_match field in BreakpointResolverFileLine::GetDescription and BreakpointResolverFileRegex::GetDescription, for example:
was:
```
1: file = '/Users/IliaK/p/llvm/tools/lldb/test/functionalities/breakpoint/breakpoint_command/main.c', line = 12, locations = 1, resolved = 1, hit count = 2
  1.1: where = a.out`main + 20 at main.c:12, address = 0x0000000100000eb4, resolved, hit count = 2
```
now:
```
1: file = '/Users/IliaK/p/llvm/tools/lldb/test/functionalities/breakpoint/breakpoint_command/main.c', line = 12, exact_match = 0, locations = 1, resolved = 1, hit count = 2
  1.1: where = a.out`main + 20 at main.c:12, address = 0x0000000100000eb4, resolved, hit count = 2
```

Test Plan:
./dotest.py -v --executable $BUILDDIR/bin/lldb functionalities/breakpoint/
./dotest.py -v --executable $BUILDDIR/bin/lldb settings/
./dotest.py -v --executable $BUILDDIR/bin/lldb tools/lldb-mi/breakpoint/

Reviewers: jingham, clayborg

Reviewed By: clayborg

Subscribers: lldb-commits, clayborg, jingham

Differential Revision: http://reviews.llvm.org/D9273

llvm-svn: 237460
diff --git a/lldb/source/Breakpoint/BreakpointResolverFileLine.cpp b/lldb/source/Breakpoint/BreakpointResolverFileLine.cpp
index 3b93067..408998e 100644
--- a/lldb/source/Breakpoint/BreakpointResolverFileLine.cpp
+++ b/lldb/source/Breakpoint/BreakpointResolverFileLine.cpp
@@ -32,13 +32,15 @@
     const FileSpec &file_spec,
     uint32_t line_no,
     bool check_inlines,
-    bool skip_prologue
+    bool skip_prologue,
+    bool exact_match
 ) :
     BreakpointResolver (bkpt, BreakpointResolver::FileLineResolver),
     m_file_spec (file_spec),
     m_line_number (line_no),
     m_inlines (check_inlines),
-    m_skip_prologue(skip_prologue)
+    m_skip_prologue(skip_prologue),
+    m_exact_match(exact_match)
 {
 }
 
@@ -78,7 +80,7 @@
         if (cu_sp)
         {
             if (filter.CompUnitPasses(*cu_sp))
-                cu_sp->ResolveSymbolContext (m_file_spec, m_line_number, m_inlines, false, eSymbolContextEverything, sc_list);
+                cu_sp->ResolveSymbolContext (m_file_spec, m_line_number, m_inlines, m_exact_match, eSymbolContextEverything, sc_list);
         }
     }
     StreamString s;
@@ -100,7 +102,7 @@
 void
 BreakpointResolverFileLine::GetDescription (Stream *s)
 {
-    s->Printf ("file = '%s', line = %u", m_file_spec.GetPath().c_str(), m_line_number);
+    s->Printf ("file = '%s', line = %u, exact_match = %d", m_file_spec.GetPath().c_str(), m_line_number, m_exact_match);
 }
 
 void
@@ -116,7 +118,8 @@
                                                                      m_file_spec,
                                                                      m_line_number,
                                                                      m_inlines,
-                                                                     m_skip_prologue));
+                                                                     m_skip_prologue,
+                                                                     m_exact_match));
 
     return ret_sp;
 }
diff --git a/lldb/source/Breakpoint/BreakpointResolverFileRegex.cpp b/lldb/source/Breakpoint/BreakpointResolverFileRegex.cpp
index 046c268..e7bce05 100644
--- a/lldb/source/Breakpoint/BreakpointResolverFileRegex.cpp
+++ b/lldb/source/Breakpoint/BreakpointResolverFileRegex.cpp
@@ -29,10 +29,12 @@
 BreakpointResolverFileRegex::BreakpointResolverFileRegex
 (
     Breakpoint *bkpt,
-    RegularExpression &regex
+    RegularExpression &regex,
+    bool exact_match
 ) :
     BreakpointResolver (bkpt, BreakpointResolver::FileLineResolver),
-    m_regex (regex)
+    m_regex (regex),
+    m_exact_match (exact_match)
 {
 }
 
@@ -64,9 +66,8 @@
     {
         SymbolContextList sc_list;
         const bool search_inlines = false;
-        const bool exact = false;
         
-        cu->ResolveSymbolContext (cu_file_spec, line_matches[i], search_inlines, exact, eSymbolContextEverything, sc_list);
+        cu->ResolveSymbolContext (cu_file_spec, line_matches[i], search_inlines, m_exact_match, eSymbolContextEverything, sc_list);
         const bool skip_prologue = true;
         
         BreakpointResolver::SetSCMatchesByLine (filter, sc_list, skip_prologue, m_regex.GetText());
@@ -85,7 +86,7 @@
 void
 BreakpointResolverFileRegex::GetDescription (Stream *s)
 {
-    s->Printf ("source regex = \"%s\"", m_regex.GetText());
+    s->Printf ("source regex = \"%s\", exact_match = %d", m_regex.GetText(), m_exact_match);
 }
 
 void
@@ -97,7 +98,7 @@
 lldb::BreakpointResolverSP
 BreakpointResolverFileRegex::CopyForBreakpoint (Breakpoint &breakpoint)
 {
-    lldb::BreakpointResolverSP ret_sp(new BreakpointResolverFileRegex(&breakpoint, m_regex));
+    lldb::BreakpointResolverSP ret_sp(new BreakpointResolverFileRegex(&breakpoint, m_regex, m_exact_match));
     return ret_sp;
 }