keymap: Fix build on Solaris host

The updated glibc regex sources use source-local includes, such as
"regex_internal.h", so add the regex directory to the search path.
Define __USE_GNU as in r38031 to define GNU extensions used and
HAVE_STDBOOL_H to avoid build failure due to type bool.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38097 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tools/keymap/Jamfile

@@ -11,6 +11,8 @@ local regexSources ;
 local storageSources ;
 
 if $(HOST_PLATFORM) = cygwin || $(HOST_PLATFORM) = sunos {
+	UseHeaders [ FDirName $(HAIKU_TOP) src system libroot posix glibc regex ] ;
+	SubDirCcFlags -D__USE_GNU -DHAVE_STDBOOL_H ;
 	regexSources = regex.c ;
 }
 if $(HOST_PLATFORM) = haiku_host {