* slime.el (slime-trim-whitespace): Handle multiline strings.
Closes slime/slime#144: removes package nicknames

It turns out that there are 2 nicknames in use here, both are relatively common.  More interestingly, the one for metering / profiling that has been around for a while was also using a common nickname and package name...so I've renamed that package, and removed all nicknames.