added .return.equal.or.na
refactored the merging of search results of different search engines
added script create_ibspectra.R
.read.idfile: trim titles only when trim.titles=TRUE
Merge branch 'ptm' of dev1:/slow/bioinfo/vcs/git/fbreitwieser/isobar-Rlib into ptm

Conflicts:
	R/isobar-import.R