[m-rev.] for review: Update configuration for FreeBSD.

[Peter Wang]

Let me know if there is anything in particular I should check.
---

These changes were tested on FreeBSD 10.1 i386/amd64.

configure.ac:
	Relax case pattern so it will match FreeBSD on architectures
	other than i*86, in particular amd64.

	Delete custom commands for LINK_SHARED_OBJ and LINK_SHARED_OBJ_SH.
	The default "$CC -shared" works fine.

	Use the default method of setting the rpath (-Wl,-rpath,)
	as we now invoke the linker through the C compiler.
	clang does not support the -R flag anyway.

	Let EXT_FOR_LINK_WITH_PIC_OBJECTS=o (same as everywhere else).

	Let DEFAULT_LINKAGE=shared (it works fine).
---
 configure.ac | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/configure.ac b/configure.ac
index 445a848..e92f8b1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4342,18 +4342,11 @@ case "$host" in
         EXT_FOR_SHARED_LIB=so
         EXT_FOR_LINK_WITH_PIC_OBJECTS=o
         ;;
-    i*86-*-freebsd*)
-        # From Cornelis van der Laan <nils at ims.uni-stuttgart.de>
+    *-freebsd*)
+        # Tested on FreeBSD 10.1 i386/amd64.
         AC_MSG_RESULT(yes)
-        LINK_SHARED_OBJ="ld -Bshareable"
-        LINK_SHARED_OBJ_SH="ld -Bshareable"
         EXT_FOR_SHARED_LIB=so
-        # From Kevet Duncombe <dunc at acm.org> tested on FreeBSD 2.2.5
-        EXE_RPATH_OPT="-R"
-        EXE_RPATH_SEP=" -R"
-        SHLIB_RPATH_OPT="-R"
-        SHLIB_RPATH_SEP=" -R"
-        DEFAULT_LINKAGE=static
+        EXT_FOR_LINK_WITH_PIC_OBJECTS=o
         ;;
     i*86-*-solaris2.*)
         AC_MSG_RESULT(yes)
-- 
2.1.2