Fix appending any potential pthread CFLAGS or LIBS.
treef4f07c8ba050ebece1005ecc7e0eb6aff8b56fed
-rw-r--r-- 17989 COPYING
-rw-r--r-- 9416 INSTALL
-rw-r--r-- 349 KnownBugs
-rw-r--r-- 522 Makefile.am
-rw-r--r-- 8389 NEWS
-rw-r--r-- 3972 README
-rw-r--r-- 136 THANKS
-rw-r--r-- 2130 TODO.org
-rw-r--r-- 11023 acinclude.m4
-rwxr-xr-x 2443 autogen.sh
-rw-r--r-- 8003 configure.ac
drwxr-xr-x - debian
drwxr-xr-x - doc
drwxr-xr-x - m4
drwxr-xr-x - po
drwxr-xr-x - src
drwxr-xr-x - tests