Improve documentation for ricker wavelet procedure
Initial changes for a nodb option.   These were actually produced
from a cross comparison with an earlier now dead branch on my
local git repository.
Bring up to date before some changes.
Merge branch 'master' of git://github.com/antelopeusersgroup/antelope_contrib
Fix error found by clang
Fix fragile test of find_first_of string calls.   Previous worked but
was dangerous because it depended upon assuming negative return for failure
but the proper test is != std::npos
Fix hidden bug detected by clang compiler.   Incorrect logic on
a for loop.
Add default in switch to catch incorrect use of template
Improve handling of errors for illegal attributes and sample type
Add ifndefs for NO_ANTELOPE option
Additional changes for NO_ANTELOPE option.  Includes a new
get_mdlist procedure that builds a MetadataList from a PfStyleMetadata object.
Add get_mdlist procedure to build from PfStyleMetadata
Support for NO_ANTELOPE option
This needs to be retained even with the nodb option.   Mistakenly removed earlier
Rearrange a prototype for get_mdlist procedure.   Previous created
a conflict because of inheritance relation of PfStyleMetadata.h.
This also just is more rational.
Add constructor for a PfStyleMetadata object
Remove relic SEISPP scope tag that seemed to cause problems downstream
Add support for PfStyleMetadata objects.  This is very similar in
usage to Pf interface, but more portable.
Add missing ifndef for NO_ANTELOPE option
Remove debris of an OLD_ANTELOPE ifdef
Fix bug in initial setup for PfStyleMetadata constructor