Some mistakes in Section 2.5.5 of developers' handbook

[RayCherng Yu]

Kevlo found some mistakes in Section 2.5.5 of developers' handbook
 2.5.5. More advanced uses of make


He pointed out:
1. FreeBSD has replaced make with bmake in 2012.
2.The referenece in incorrect.  /usr/share/doc/psd/12.make/paper.ascii.gz
decribes the pmake
3.This is bmake(http://www.crufty.net/help/sjg/bmake.html)

Anyone could help to correct this section?

Thanks


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