issue-528: fixed spelling

This simply applies patch by Lajos Veres



git-svn-id: http://gperftools.googlecode.com/svn/trunk@219 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
issue-545: corrected README for CPUPROFILE_FREQUENCY variable

Applied patch by Mikhail Veltishchev



git-svn-id: http://gperftools.googlecode.com/svn/trunk@220 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
issue-534: fixed a number of gcc warnings

This applies patch from Adhemerval Zanella.



git-svn-id: http://gperftools.googlecode.com/svn/trunk@221 6b5cf1ce-ec42-a296-1ba9-69fdba395a50