Issue #2065: VC6 related fix.

- PC/VC6/_bsddb.dsp:
    removed '/nodefaultlib:"msvcrt"' to fix linker error.

- PC/VC6/_sqlite3.dsp:
    /D "MODULE_NAME=\"sqlite3\""
    caused extra leading space like
    #define MODULE_NAME " sqlite3"
    so uses
    /D MODULE_NAME=\"sqlite3\"
    instead.

- PC/VC6/python.dsp:
    changed the way of modifying stack size
diff --git a/PC/VC6/_sqlite3.dsp b/PC/VC6/_sqlite3.dsp
index a48ef72..a8f3329 100644
--- a/PC/VC6/_sqlite3.dsp
+++ b/PC/VC6/_sqlite3.dsp
@@ -44,7 +44,7 @@
 # PROP Target_Dir ""

 F90=df.exe

 # ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c

-# ADD CPP /nologo /MD /W3 /GX /Zi /O2 /I "..\..\Include" /I ".." /I "..\..\..\sqlite-source-3.3.4" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "MODULE_NAME=\"sqlite3\"" /YX /FD /c

+# ADD CPP /nologo /MD /W3 /GX /Zi /O2 /I "..\..\Include" /I ".." /I "..\..\..\sqlite-source-3.3.4" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D MODULE_NAME=\"sqlite3\" /YX /FD /c

 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32

 # ADD MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32

 # ADD BASE RSC /l 0x409 /d "NDEBUG"

@@ -72,7 +72,7 @@
 # PROP Target_Dir ""

 F90=df.exe

 # ADD BASE CPP /nologo /MTd /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /YX /FD /c

-# ADD CPP /nologo /MDd /W3 /Gm /GX /Zi /Od /I "..\..\Include" /I ".." /I "..\..\..\sqlite-source-3.3.4" /D "_DEBUG" /D "WIN32" /D "_WINDOWS" /D "MODULE_NAME=\"sqlite3\"" /YX /FD /c

+# ADD CPP /nologo /MDd /W3 /Gm /GX /Zi /Od /I "..\..\Include" /I ".." /I "..\..\..\sqlite-source-3.3.4" /D "_DEBUG" /D "WIN32" /D "_WINDOWS" /D MODULE_NAME=\"sqlite3\" /YX /FD /c

 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32

 # ADD MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32

 # ADD BASE RSC /l 0x409 /d "_DEBUG"