autobuild for Linux, FreeBSD, OS X

[orkim]

Follow up to my post to posts back. I took the time to edit the needed files in the build system to do the two problems I ran into automatically:

./configure.ac needs to be updated to reflect:

## Check for required libraries.
AC_CHECK_LIB( pthread, pthread_create, [],
    [LDFLAGS="-pthread $LDFLAGS"
     AC_TRY_LINK([char pthread_create();],
         pthread_create();,
         [], [AC_MSG_ERROR([Missing pthread])])
    ])

# dl
AC_CHECK_LIB( dl, dlopen, [],
    [LDFLAGS="-ldl $LDFLAGS"
     AC_TRY_LINK([char dlopen();],
         dlopen();,
         [], [AC_MSG_ERROR([Missing libdl])])
    ])

# Check for zlib
AC_CHECK_LIB( z, compress, [ZLIB=-lz],[AC_MSG_ERROR([Missing zlib])] )

./zone/Makefile.am needs to be updated to reflect:

        questmgr.cpp \
        questmgr.h \
        QuestParserCollection.cpp \
        QuestParserCollection.h \
        QGlobals.cpp \
        QGlobals.h \

'autoreconf -fi', './configure', 'make'.. etc etc..

-orkim