Added reinstall_all to reinstall all inputs at once

with_all: Documented that it must be run from the root svn directory

input.Makefile: Staging tables: import/install-%: Only install staging table if input contains only CSV sources. Changed $(isXml) to $(isCsv) (negated) everywhere because rules almost always only run something if input contains only CSV sources, rather than if input contains XML sources.

input.Makefile: Staging tables: import/install-%: Output load status to log file if log option is set

Scripts that are meant to be run in the calling shell: Fixed bug where running the script inside another script would make the script think it was being run as a program, and abort with a usage error

Scripts that are meant to be run in the calling shell: Fixed bug where running the script as a program (without initial ".") wouldn't be able to call return in something that was not a function. Converted all code to a <script_name>_main method so that return would work properly again. Converted all variables to local variables.

env_password: return instead of exit if password not yet stored, in case user is running it from a shell without the initial "-" argument. (This would be the case if the user is just testing out the script, instead of using a command that env_password directs them to run.)

env_password: Use ${BASH_SOURCE⁰} for $self and $self for $0. return instead of exit on usage error in case user is running it from a shell.

stop_imports: Use ${BASH_SOURCE⁰} for $self and $self for $0

import_all: Use new with_all. Use ${BASH_SOURCE⁰} for $self and $self for $0.