added import of station data to ghcn postgres script

updated directory paths and related comments

added R script to load GHCN data into a PostgreSQL DB

further optimized functions in R for some minor extra speedup

dropped unnecessary record-count query from bulk insert function

superficial code reformatting

replaced reshape with faster manual split-rbind approach

added grep pre-filtering of rows in the *.dly files

replaced read.fortran with faster system call to awk/tr

added initial R script to load GHCN data into a SQLite DB

cleaned up file permissions

added in various previously uncommitted scripts