Description of problem:
lua.spec munges the LIBS path to remove readline and ncurses,
but -failed- to restore -lm required by liblua-5.1.so

Version-Release number of selected component (if applicable):
lua-5.1.4-1.fc10.src.rpm

How reproducible:
Always with httpd trunk, probably other lua consumers who have no direct
dependency on -lm

Steps to Reproduce:
1. yum install lua lua-devel
2. checkout http://svn.apache.org/repos/asf/httpd/httpd/trunk et al
3. ./buildconf --with-apr=/path/to/apr/src
4. ./configure --prefix=/usr/local --with-lua [etc]
5. make; make install
6. /usr/local/bin/apachectl -t
  
Actual results:
[when testing 'LoadModule lua_module modules/mod_lua.so']
httpd: Syntax error on line 97 of /opt/apache2x/conf/httpd.conf: Cannot load /opt/apache2x/modules/mod_lua.so into server: /usr/lib64/liblua-5.1.so: undefined symbol: sqrt

Expected results:
Syntax OK

Additional info:
The lua.spec make line, currently missing an -lm, should read;

make %{?_smp_mflags} LIBS="-lm -ldl" luac_LDADD="liblua.la -lm -ldl"