Add .opensdf files to .gitignore.
Add .opensdf files to .gitignore.

TRAC #22410

Signed-off-by: Geoff Lang
Signed-off-by: Daniel Koch
Author: Jamie Madill

git-svn-id: 2a1ef23f1c4b6a1dbccd5f9514022461535c55c0@1770 736b8ea6-26fd-11df-bfd4-992fa37f6226

MSOpenTech/angle-win8.0,themusicgod1/angleproject,android-ia/platform_external_chromium_org_third_party_angle,ghostoy/angle,ehsan/angle,ppy/angle,ecoal95/angle,android-ia/platform_external_chromium_org_third_party_angle,bsergean/angle,mybios/angle,bsergean/angle,stammen/angleproject,cantren/angleproject,themusicgod1/angleproject,ghostoy/angle,RepublicMaster/angleproject,nandhanurrevanth/angle,MIPS/external-chromium_org-third_party-angle_dx11,MIPS/external-chromium_org-third_party-angle_dx11,ppy/angle,stammen/angleproject,RepublicMaster/angleproject,KalebDark/angleproject,bsergean/angle,cantren/angleproject,mrobinson/rust-angle,mlfarrell/angle,nandhanurrevanth/angle,KalebDark/angleproject,pombreda/angleproject,xin3liang/platform_external_chromium_org_third_party_angle_dx11,nandhanurrevanth/angle,ghostoy/angle,mikolalysenko/angle,MIPS/external-chromium_org-third_party-angle,vvuk/angle-old,pombreda/angleproject,csa7mdm/angle,bsergean/angle,android-ia/platform_external_chromium_org_third_party_angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,domokit/waterfall,csa7mdm/angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,cvsuser-chromium/chromium-third-party_angle_dx11,geekboxzone/lollipop_external_chromium_org_third_party_angle,MIPS/external-chromium_org-third_party-angle_dx11,mlfarrell/angle,pombreda/angleproject,xin3liang/platform_external_chromium_org_third_party_angle_dx11,jgcaaprom/android_external_chromium_org_third_party_angle,crezefire/angle,mybios/angle,vvuk/angle-old,vvuk/angle-old,android-ia/platform_external_chromium_org_third_party_angle,ecoal95/angle,larsbergstrom/angle,MIPS/external-chromium_org-third_party-angle_dx11,KTXSoftware/angleproject,MIPS/external-chromium_org-third_party-angle,mrobinson/rust-angle,mrobinson/rust-angle,android-ia/platform_external_chromium_org_third_party_angle_dx11,domokit/waterfall,xuxiandi/angleproject,ehsan/angle,jgcaaprom/android_external_chromium_org_third_party_angle,mikolalysenko/angle,KTXSoftware/angleproject,shairai/angleproject,mlfarrell/angle,pombreda/angleproject,ghostoy/angle,csa7mdm/angle,cvsuser-chromium/chromium-third-party_angle_dx11,mybios/angle,MSOpenTech/angle,ehsan/angle,mrobinson/rust-angle,cvsuser-chromium/chromium-third-party_angle_dx11,MSOpenTech/angle,vvuk/angle,MSOpenTech/angle-win8.0,cantren/angleproject,vvuk/angle,crezefire/angle,android-ia/platform_external_chromium_org_third_party_angle_dx11,ecoal95/angle,stammen/angleproject,xin3liang/platform_external_chromium_org_third_party_angle_dx11,KTXSoftware/angleproject,mikolalysenko/angle,vvuk/angle,xin3liang/platform_external_chromium_org_third_party_angle,ppy/angle,MSOpenTech/angle-win8.0,xuxiandi/angleproject,RepublicMaster/angleproject,themusicgod1/angleproject,MIPS/external-chromium_org-third_party-angle,ecoal95/angle,cvsuser-chromium/chromium-third-party_angle_dx11,KTXSoftware/angleproject,vvuk/angle,jgcaaprom/android_external_chromium_org_third_party_angle,KTXSoftware/angleproject,mrobinson/rust-angle,larsbergstrom/angle,RepublicMaster/angleproject,crezefire/angle,stammen/angleproject,jgcaaprom/android_external_chromium_org_third_party_angle,MSOpenTech/angle-win8.0,ehsan/angle,KalebDark/angleproject,geekboxzone/lollipop_external_chromium_org_third_party_angle,android-ia/platform_external_chromium_org_third_party_angle_dx11,xin3liang/platform_external_chromium_org_third_party_angle,cantren/angleproject,MSOpenTech/angle,KalebDark/angleproject,android-ia/platform_external_chromium_org_third_party_angle_dx11,crezefire/angle,nandhanurrevanth/angle,ecoal95/angle,xuxiandi/angleproject,xuxiandi/angleproject,shairai/angleproject,vvuk/angle-old,larsbergstrom/angle,shairai/angleproject,shairai/angleproject,xin3liang/platform_external_chromium_org_third_party_angle,mybios/angle,xin3liang/platform_external_chromium_org_third_party_angle,mikolalysenko/angle,mlfarrell/angle,xin3liang/platform_external_chromium_org_third_party_angle_dx11,ppy/angle,themusicgod1/angleproject,MSOpenTech/angle,larsbergstrom/angle,csa7mdm/angle,MIPS/external-chromium_org-third_party-angle