add documentation of the new encryption options
remove trailing whitespace in pod doc
update copyright year
fix comparison operator for string tests
fix comparison operator for string tests. Resolves #3
Merge branch 'develop' of github.com:fukawi2/pgsql-backup into develop
several small updates to man page
check configuration file permissions before starting
no need for -p argument to mkdir
refactor compression handling
make dbdump function adhere to style guide
fix dumping of a specific list of databases

not sure when this broke, but listing specific databases would not work
without this patch.
code left over from automysqlbackup not required for postgresql
no need for -p argument; also test for directory, not existence
fix script name in email output
cleanup of output text to improve readbility and usefulness
add ENCRYPTION_CIPHER variable
fix file suffix calculation when compression disabled
more detailed disk usage report
version number bump