* Changed the copyrights from Richard Stallman to Free Software Foundation.
* Added Roland McGrath to the authors on the title page.
* Missing `include'd makefiles are warnings, not fatal errors.
* Clarified that conditionals determine what is `seen' in the makefile,
so they can't be used to determine commands based on macros that are
defined when the commands are executed (such as `$@').
* Added `-w' switch to log directories to stdout.
* Added selective VPATH lists and the `vpath' directive.
* Added the previously undocumented `-lLIB' dependent syntax.
* Added the `filter', `filter-out', `strip' and `join' expansion functions.
* Added simply expanded vs. recursively expanded variables, `:=' variable
assignments and changed most examples to use `:=' rather than `='.
* Corrected miscellaneous typos, grammatical errors, etc.
This version of the documentation is accurate for revision 1.2 of the source.
