Makefiles: Factored out common vars/functions into lib/common.Makefile

root Makefile: $(psqlNoSearchPath): Merged $(psqlAsBien) into it because it's the only place $(psqlAsBien) is used

root Makefile: $(psqlAsBien): Use psql_script_vegbien instead of psql_vegbien, which adds $(psqlOpts) itself

schemas/Makefile: Include lib/common.Makefile

inputs/import.stats.xls: Reformatted so the first by column import and the comparison by row import will fit on the same page when printed on portrait-mode letter paper

inputs/import.stats.xls: Changed import type labels to By row/By column so they would fit into one field, leaving the extra field free to contain the revision #

lib/common.Makefile: Revisions: Allow $(version) to be overridden in the environment, so that the public schema and all log files share the same, pregenerated version

schemas/vegbien.sql: Merged provider_view, provider_count, and owner_count into provider_count, using the combining query for Brad's data providers page at <http://bien.nceas.ucsb.edu/bien/people/data-providers/>

schemas/vegbien.sql: sync_taxon_trait_to_view(): Changed pkey to index because there can be multiple values of the same taxon's trait from different observations

mappings/Makefile: VegCore.csv: Filter out the VegCore tables so they are not matched as terms. This is necessary because some terms have the same name as a table, but the term should be the match rather than the table.