pidgin/pidgin

Use LT_LIB_M to determine if we need to link to the math library and link Pidgin to the X11 libraries

Gentoo ran into an issue with the gold linker without -lm. The original patch
and work came from Justin Lechner. https://bugs.gentoo.org/386079

Gentoo also ran into an issue with X11_LIBS not being added to pidgin. This
should already be implicit everywhere except for homebrew which patches X11
out of their build. Original patch/work came from and. https://bugs.gentoo.org/500762

Testing Done:
Installed and ran locally.

Reviewed at https://reviews.imfreedom.org/r/608/
/*
* untar.h
*
* Author: Herman Bloggs <hermanator12002@yahoo.com>
* Date: April, 2003
* Description: untar.c header
*/
#ifndef _UNTAR_H_
#define _UNTAR_H_
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef enum _untar_opt {
UNTAR_LISTING = (1 << 0),
UNTAR_QUIET = (1 << 1),
UNTAR_VERBOSE = (1 << 2),
UNTAR_FORCE = (1 << 3),
UNTAR_ABSPATH = (1 << 4),
UNTAR_CONVERT = (1 << 5)
} untar_opt;
int untar(const char *filename, const char *destdir, untar_opt options);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif