Fix CheckIdentifierNotPurelyNumerical so it does not use IntFromString
format() function
Fix note about concatenation of search_mode in file_select
Fixes #2568. JoinSuffix should not be used here.
Fix CheckIdentifierNotPurelyNumerical: return false/true not 0/1 and no single-line ifs
Merge pull request #636 from cduclos/master

Fixing acl acceptance tests
cfengine_stdlib.cf: use negative lookahead in comment_lines_matching to prevent commenting out comments, from pull request #396
Make negative look-ahead only match exact lines
Merge pull request #637 from bheilman/correct_maintain_key_values

cfengine_stdlib.cf: Make negative look-ahead only match exact lines
Merge pull request #630 from jeffali/fix/2568

Fixes #2568. JoinSuffix should not be used here.
Merge pull request #627 from nickanderson/fix/2593

Fix note about concatenation of search_mode in file_select
Merge pull request #610 from tzz/tzz/redmine-1193-purely-numerical-identifiers

Redmine#1193: Fix CheckIdentifierNotPurelyNumerical so it does not use IntFromString
Fix merged CheckIdentifierNotPurelyNumerical. My bad.
Merge pull request #486 from tzz/tzz/sprintf_formats

format() function
Format stdout output for Log
Convert CfOut statements to Log
Remove errstr from CfOut, CfVOut
Remove errstr from cfPS
Remove old logging
ISO 8601 timestamps in console logging