Option to disable jazzignore changes from visual studio

Hi Surya,

See below jazzignore example before and after sharing a visual studio solution.

You will find that there was deletion of some ignored patterns during the sln jazz share process.

Jazzignore - Before:

### Jazz Ignore 0
# Ignored files and folders will not be committed, but may be modified during
# accept or update. 
# - Ignore properties should contain a space separated list of filename patterns. 
# - Each pattern is case sensitive and surrounded by braces ('{' and '}'). 
# - "*" matches zero or more characters. 
# - "?" matches a single character. 
# - The pattern list may be split across lines by ending the line with a
#     backslash and starting the next line with a tab. 
# - Patterns in core.ignore prevent matching resources in the same
#     directory from being committed. 
# - Patterns in core.ignore.recursive matching resources in the current
#     directory and all subdirectories from being committed. 
# - The default value of core.ignore.recursive is *.class
# - The default value for core.ignore is bin
#
# To ignore shell scripts and hidden files in this subtree:
#     e.g: core.ignore.recursive = {*.sh} {\.*}
#
# To ignore resources named 'bin' in the current directory (but allow
#  them in any sub directorybelow):
#     e.g: core.ignore.recursive = {*.sh} {\.*}
#
# NOTE: modifying ignore files will not change the ignore status of
#     Eclipse derived resources.

core.ignore.recursive= {bin} {Release} {bin64} {*.mak2} {*.vcproj_mak} \
 {*.obj} {*.asm} {*.bsc} {*.htm} {*.LL_libs} {*.LL_test} \
 {*.log} {*.lst} {*.mak2} {*.makdep} {*.slice} {*.state} \
 {*.tlb} {*.vcproj_mak} {Thumbs.db} {*.dep} {*.exp} {*.h62} \
 {*.idb} {*.map} {*.ncb} {*.pch} {*.res} {*.resources} \
 {*.pdb} {*.lib} {*.opt} {*.manifest} {*.sbr} {*.s62} \
 {*.dll} {*.Dll} {*.exe} \
 {*.vcproj.*.user} \
 {LogHeaderInfo.h} {dlldata.c} {HostRunner_i.c} {HostRunner_p.c} {HostRunner.h} \
 {EIM_manager.cdb} {EIM_managercfg_c.c} {EIM_managercfg.cmd} {EIM_managercfg.h} {EIM_manager.out} \
 {Master.out} {Swiftcfg_c.c} {Swiftcfg.cmd} {Swiftcfg.h} \
 {*.rbf}
 
core.ignore=

Jazzignore - After:

### Jazz Ignore 0
# The property core.ignore specifies a list of file patterns that will be
# ignored in this directory.
#
# The value of core.ignore.recursive will be ignored.
#
# Ignore properties should contain a space separated list of filename patterns.
# Each pattern is case sensitive and surrounded by braces ('{' and '}').
# "*" matches zero or more characters, and "?" matches single characters.
#
#   e.g: {*.sh} {\.*}    ignores shell scripts and hidden files

# NOTE: modifying ignore files will not change the ignore status of derived
# resources.

core.ignore.recursive=  \
 {*.obj} \
 {*.log} \
 {*.tlb} \
 {*.idb} \
 {*.pdb} \
 {*.dll} \
 {*.vcproj.*.user} \
 {LogHeaderInfo.h} \
 {EIM_manager.cdb} \
 {Master.out} \
 {*.rbf}

core.ignore=