Move the equalizer plugin across from -bad

Move the equalizer plugin across from -bad

Original commit message from CVS:
* configure.ac:
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.args:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* docs/plugins/gst-plugins-good-plugins.interfaces:
* docs/plugins/inspect/plugin-equalizer.xml:
* gst/equalizer/Makefile.am:
* tests/check/Makefile.am:
* tests/examples/Makefile.am:
Move the equalizer plugin across from -bad
* tests/check/elements/.cvsignore:
Add equalizer, audiosincwband and audiosincwlimit
* tests/check/elements/equalizer.c:
Fix compiler warnings