Add libedit prebuilts for linux-x86.

This is based on the external/libedit repo from
commit 92d2359bcffabfcca85c64eb4908556aa69ef96a,
which is libedit-20130712-3.1 as built via this
command line on a Ubuntu 12.04 x86_64 host:

cd external/libedit
mm ANDROID_BUILD_LIBEDIT=true \
  prebuilts/libs/libedit/linux-x86/lib/libedit.a

Change-Id: I63f0e6db73870368fd6fd52ed4890343e41a0c28
diff --git a/linux-x86/lib/libedit.la b/linux-x86/lib/libedit.la
new file mode 100755
index 0000000..09d3c12
--- /dev/null
+++ b/linux-x86/lib/libedit.la
@@ -0,0 +1,41 @@
+# libedit.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.2
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libedit.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=' -ltinfo'
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libedit.
+current=0
+age=0
+revision=47
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/usr/local/google/home/tfiala/android/master/prebuilts/libs/libedit/linux-x86/lib'