MFC r289349: mkimg: support fat16b partitions (MBR type 06h)

Sponsored by: The FreeBSD Foundation

MFC r286660, r286419, r286417, r286395, r286215, r284883

- Add the ntfs alias
- Fix the dynamic VHD format to work with qemu
- Update manpage

MFH:
Differential Revision:

MFC 279125, 279126, 279128, 279139:
Add the -c option for specifying the capacity of the disk image.
Bump the version to 20150222.

MFC 271881: Fix partition alignment and image rounding when any of
-P (block size), -T (track size) or -H (number of heads) is given.

Approved by: re@ (gjb)

MFC mkimg(1) -- revisions 268159, 268134, 266556, 266514, 266513,
266512, 266511, 266510, 266509, 266176, 265468, 265467,
265462, 265170, 263926, 263924, 263923, 263919 and 263918.

Revision 267182 changed mkimg.1 alongside other unrelated manpages.
The change to mkimg.1 has been applied without registering a merge
of the revision. This allows a future merge of r267182 to happen.

Relnotes: yes

MFC r286660, r286419, r286417, r286395, r286215, r284883

- Add the ntfs alias
- Fix the dynamic VHD format to work with qemu
- Update manpage

MFH:
Differential Revision:

MFC 279125, 279126, 279128, 279139:
Add the -c option for specifying the capacity of the disk image.
Bump the version to 20150222.

MFC 271881: Fix partition alignment and image rounding when any of
-P (block size), -T (track size) or -H (number of heads) is given.

Approved by: re@ (gjb)

MFC mkimg(1) -- revisions 268159, 268134, 266556, 266514, 266513,
266512, 266511, 266510, 266509, 266176, 265468, 265467,
265462, 265170, 263926, 263924, 263923, 263919 and 263918.

Revision 267182 changed mkimg.1 alongside other unrelated manpages.
The change to mkimg.1 has been applied without registering a merge
of the revision. This allows a future merge of r267182 to happen.

Relnotes: yes