GNU -Wall Warning Reduction

[scrasmussen]

Reducing GNU -Wall warnings per issue #495.

Commits fix the following warning flags implied in -Wall

Compiler Flag	Description
-Wampersand	Warn about missing ampersand in continued character constants
-Wtabs	By default, tabs are accepted as whitespace, but tabs are not members of the Fortran Character Set.
-Wline-truncation	Warn when a source code line will be truncated
-Wcharacter-truncation	Warn when a character assignment will truncate the assigned string
-Wreturn-type	Warn when return value is not set

[grantfirl]

This should also be targeted at ufs-community:ufs/dev