doctemplate_make should build default type when no type specified

[Kyle Nitzsche]

Currently (2.2), you need to specify the type of project as an argument to doctemplate_make, for example:
doctemplate_make html
doctemplate_make pdf
doctemplate_make xml

etc.

Some projects support only a single final output type (for example jumpstart or mallard).

And some support multiple output types but only one is of interest.

Thus, there should be a means to set the default build type on the project level.

[Kyle Nitzsche (knitzsche)]

An approach would be to allow a new field in the project's environment file that simply sets the desired default:
default_build=<something>

If it exists, doctemplate_make uses it when no argument is specified.

[Kyle Nitzsche (knitzsche)]

fix committed in trunk branch revision 310

[Kyle Nitzsche (knitzsche)]

I should note that to set the default build type for a project add this to the environment file:
export DEFAULT_BUILD=<something>

[Kyle Nitzsche (knitzsche)]

fix released with 2.3