Passing $ax_is_release is not only unnecessary (the related macros already

use it by default), but wrong as it causes an invalid configuration test

define to be generated.

file upstream bug

--- yelp-3.16.1/configure.ac 2015-05-11 10:33:26.000000000 -0700

+++ yelp-3.16.1/configure.ac 2015-07-02 21:59:51.040121647 -0700

@@ -11,9 +11,9 @@

AM_SILENT_RULES([yes])

AX_IS_RELEASE([git-directory])

-AX_CHECK_ENABLE_DEBUG([info], [YELP_DEBUG], [$ax_is_release])

+AX_CHECK_ENABLE_DEBUG([info], [YELP_DEBUG])

-AX_COMPILER_FLAGS([], [], [$ax_is_release])

+AX_COMPILER_FLAGS()

# Check for programs

AC_PROG_CC

AC_PROG_CC_C_O