Re: [PATCH 1/9] Fix git patch header processing in git-apply.

Thanks for "apply" patches.  I have merged some of them and
pushed out.

I further wanted to apply the following to the proposed updates
branch, but even with only the first one applied, it fails its
own test, t4104-apply-complex.sh:

* Fix processing of a patch file which modifies the same file in git-apply.
* Fix the processing of multiple patch files with --check in git-apply.
* New option --ignore-whitespace for git-apply.
* New option --ignore-applied for git-apply.

*** t4104-apply-complex.sh ***
* FAIL 5: S = Nx Px1
	cat Nx Px1 | git-apply -
* FAIL 6: S = Nx Px1 Px2
	cat Nx Px1 Px2 | git-apply -
* FAIL 7: S = Nx Px1 Px2 Px3
	cat Nx Px1 Px2 Px3 | git-apply -
* FAIL 8: S = Nx Px1 Px2 Px3 Dx
	cat Nx Px1 Px2 Px3 Dx | git-apply -
* FAIL 13: S = Ny Ryx Px1 Px2 Cxy Px3 Dx
	cat Ny Ryx Px1 Px2 Cxy Px3 Dx | git-apply -
* FAIL 14: S = Ny Ryx Px1 Px2 Cxy Px3 Dx Cyx
	cat Ny Ryx Px1 Px2 Cxy Px3 Dx Cyx | git-apply -
* FAIL 15: S = Ny Cyx Px1 Px2 Px3 Dy Cxy Dx Cyx Dy Rxy Dy
	cat Ny Cyx Px1 Px2 Px3 Dy Cxy Dx Cyx Dy Rxy Dy| git-apply -