Minor change

# WARNING: this file is a meta-makefile written to adapt the compilation of

# nmxptool when you are compiling it under Earthworm system. This file should

# work for all operating systems using almost all 'make' programs.

#

# It is based on program 'test' and environment variables:

#     $GLOBLAFLAGS, $EW_HOME, $EW_VERSION

# If you want to enable libmseed support for nmxptool you have to have 'gcc'

#     and set variable EXTRAPACKAGE to "with-libmseed".

#

# For Windows-XP and Windows-2000 compile under MinGW.

#

# make -f makefile.ux.nognu