#1 reserved identifier violation

[Markus Elfring]

The include guard "_TIFFMANIPULATE_H" does not fit to the expected naming conventions of the C++ language standard.
http://tifftools.cvs.sourceforge.net/viewvc/tifftools/tiffmesh/tiffmesh/TIFFManipulate.h?revision=1.1.1.1&view=markup

See also https://www.securecoding.cert.org/confluence/display/seccode/DCL37-C.+Do+not+use+identifiers+that+are+reserved+for+the+implementation ...