Clean-up and gitignore a.out.

.gitignore

@@ -48,6 +48,7 @@ Makefile
 *.mod
 *.o
 .libs
+/a.out
 /app/cdi
 /app/createtable
 

configure.ac

@@ -51,6 +51,8 @@ dnl before switching on libtool, identify compilers that prevent us from
 dnl certain build configurations
 ACX_LT_PROBLEMS
 LT_INIT([pic-only])
+dnl Clean up after Libtool checks:
+rm -f a.out
 dnl _KPSE_USE_LIBTOOL ensures libtool is also used for configure-time tests,
 dnl which deduces dependent libraries automatically
 _KPSE_USE_LIBTOOL