Use __executable_start to find start of text segment for profiling

* emacs.c (main) [PROFILING]: Use __executable_start if defined to
find start of text segment.
* dispnew.c (safe_bcopy): Don't define if HAVE___EXECUTABLE_START
is defined.

* configure.in: Check for __executable_start.

1 files changed, 4 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 2746258e0c2..64c61254371 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-07-25  Andreas Schwab  <schwab@linux-m68k.org>
+
+        * configure.in: Check for __executable_start.
+
 2010-07-24  Ken Brown  <kbrown@cornell.edu>
 
         * configure.in (LINKER, LIB_GCC): Remove cygwin special cases (Bug#6715)