ax_lib_hdf5.m4: extra space in the include path flag

[Chun-Chung Chen]

Hi,

In the latest version of ax_lib_hdf5.m4 (serial 10), the code parsing 
the output of h5cc for the "Installation point:" results in an extra 
leading space. The space creeps into HDF5_CPPFLAGS and breaks the 
include path flag into two tokens, e.g., "-I" and "/usr/include".  While 
this may be legal and doesn't affect the compilation, it does break some 
library tools (e.g.,  when the macro is used in building a dynamic 
library that uses pkg-config). Please see the attached patch for a 
proposed fix for the situation.

With best wishes,

Chun-Chung Chen

ax_lib_hdf5.diff
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