fix mistakes in solution to Exercise 5.1.

The constant to which contents in register COUNTER is compared should be
N rather than 1.

Modified are the following 2 files:

	Exercise_5.1.pdf
	Exercise_5.1.tm

Thank you!
							Lawrence X. A. Yan
							  Aug 16th, 2014
							  Fuzhou, China
add solution to Exercise 5.2.

Included are the following 2 files:

	Exercise_5.2.pdf
	Exercise_5.2.tm

Thank you!
							Lawrence X. A. Yan
							  Aug 16th, 2014
							  Fuzhou, China
fix mistakes in solution to Exercise 5.1.

Initialization to registers PRODUCT and COUNTER were omitted before, now
complemented.

Modified are the following 2 files:

	Exercise_5.1.pdf
	Exercise_5.1.tm

Thank you!
							Lawrence X. A. Yan
							  Aug 17th, 2014
							  Fuzhou, China
fix mistakes in solution to Exercise 5.2.

Initialization to registers PRODUCT and COUNTER were omitted before, now
complemented.

Modified are the following 2 files:

	Exercise_5.2.pdf
	Exercise_5.2.tm

Thank you!
							Lawrence X. A. Yan
							  Aug 17th, 2014
							  Fuzhou, China
add solution to Exercise 5.3.

Included are the following 2 files:

	Exercise_5.3.pdf
	Exercise_5.3.tm

Thank you!
							Lawrence X. A. Yan
							  Aug 20th, 2014
							  Fuzhou, China
add solution to Exercise 5.4.

Included are the following 2 files:

	Exercise_5.4.pdf
	Exercise_5.4.tm

Thank you!
							Lawrence X. A. Yan
							  Aug 21st, 2014
							  Fuzhou, China
add solution to Exercise 5.6.

Included are the following 2 files:

	Exercise_5.6.pdf
	Exercise_5.6.tm

Thank you!
							Lawrence X. A. Yan
							  Aug 24th, 2014
							  Fuzhou, China
add solution to Exercise 5.7.

Included is the following file:

	Exercise_5.7.scm

Thank you!
							Lawrence X. A. Yan
							  Aug 24th, 2014
							  Fuzhou, China
add solution to Exercise 5.8.

Included are the following 4 files:

	Exercise_5.8.pdf
	Exercise_5.8.scm
	Exercise_5.8.tm
	ch5-regsim-aug.scm

Thank you!
							Lawrence X. A. Yan
							  Aug 25th, 2014
							  Fuzhou, China
add solution to Exercise 5.9.

Included are the following 2 files:

	Exercise_5.9.pdf
	Exercise_5.9.tm

Thank you!
							Lawrence X. A. Yan
							  Aug 26th, 2014
							  Fuzhou, China