* bug fix - de-escape double backslashes in file paths of #line directives
From merged PR danmar/simplecpp#187.
* externals/simplecpp/simplecpp.cpp:
- add static function REPLACEALL which replaces a string FROM to the
string TO at every occurance in the input string.
- simplecpp::TokenList::readfile: replace any double backslashes in any
file path of a #line directive.
* externals/simplecpp/simplecpp.cpp: astyling
1cef732e1b