Patch: Don't initialize variables in header files

[markdoliner]

The _stanza_errors array is initialized in util/util.h, however, this causes a large number of these warnings in various files:

storage.c: At top level: ../util/util.h:379: warning: ‘_stanza_errors’ defined but not used

I think the correct way to handle this is to declare the variable as extern in the header file, and then to initialize the variable in a source file.

I'm using gcc 4.1.2 with CFLAGS="-ggdb -Wall -Wdeclaration-after-statement -Werror-implicit-function-declaration"

[smoku]

(In [430]) Don't initialize variables in header files. Fixes #161