porters-handbook: Document FLAVORS_SUB

[lwhsu]

documentation/content/en/books/porters-handbook/makefiles/_index.adoc

4104

typo?

[bcr]

Two minor fixes.

documentation/content/en/books/porters-handbook/plist/_index.adoc

60

s/arefiles/are files/

68

s/lines only/lines is only/

[pauamma_gundo.com]

English LGTM other than that.

documentation/content/en/books/porters-handbook/plist/_index.adoc

68

I agree the sentence is iffy, but I'm not sure bcr's correction is right either, depending on the intended meaning. Perhaps something like "In [.filename]#pkg-plist#, use %%X11%% in front of the lines that should be installed only when the flavor is enabled, like this:" (that is, what gets installed conditionally is the rest of the line, not X11 (or %%X11%%).

[imp]

documentation/content/en/books/porters-handbook/makefiles/_index.adoc

4123

.endif

4127

.endif

[trhodes]

This comment was removed by trhodes.

documentation/content/en/books/porters-handbook/plist/_index.adoc

68

Maybe “preface any lines enabling the installation of the flavor with %%X11%%” just to be more clear?

[pauamma_gundo.com]

Did this fall through the cracks? Seems to me it's waiting for a post-review revision.

[carlavilla]

@bapt, can I fix the comments and make the commit?