Environment Layout

All ENV options are organized within the following sections:

meta	Descriptions, titles etc.
env	Environment variables to replace.

The [env] section

The env section of an environment layout have no predefined options.
Instead each given option is interpreted as an environment variable to be
altered.

If a given environment variable exists, it is replaced with the
given value. If the variable doesn’t exist it is created at build time.

If multiple ENV files manipulate the same environment variable their values
are concatenated into the same variable.

Pseudo reference example:

   [meta] 
    TITLE           = Brew 2.0
    DESCRIPTION     = Environment layout for the Brew 2.0 SDK and compiler. 
   [env]
    PATH            = C:\Program Files\BREW_SDK_v2.0.1;C:\gnude\bin
    BREWSDK         = C:\Program Files\BREW_SDK_v2.0.1