Fix compiler warnings in libavogadro.

Can't get the unknown pragma to be suppressed (the thirdparty
exclusion should remove it) but this cleans up the rest of the
warnings.

Change-Id: Icee4390c1c25ac72fd6828260f925a815caae206
Merge branch 'master' into compiler-warnings

Conflicts:
	avogadro/qtgui/periodictableview.cpp

Change-Id: Ibf68aa19d6cdf8f9160b4fe17e3365b4299a95c2
Fix type conversion warnings in new tool code.

Change-Id: I8123ba464e397a2e449302f7e62f1a9e82f5af04
Add warning exclusions.

Change-Id: Ie62c52694c47729e80b24442c98c9efc9acb0537
Merge topic 'compiler-warnings' into master

de6d7c68 Add warning exclusions.
288baf4a Fix type conversion warnings in new tool code.
7f3944d1 Merge branch 'master' into compiler-warnings
d7266c6b Fix compiler warnings in libavogadro.