* configure.ac: Don't ignore user-provided LDFLAGS while trying    to detect libmagic. Fixes libmagic detection where configure    relies on LDFLAGS to find libraries in non-standard locations.
* configure.ac: Don't ignore user-provided LDFLAGS while trying
   to detect libmagic. Fixes libmagic detection where configure
   relies on LDFLAGS to find libraries in non-standard locations.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1577200 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion