add missing files for Travis

.travis/after_failure.sh

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+#!/bin/bash
+
+source .travis/common.sh
+set -e
+
+# Close the after_success.1 fold travis has created already.
+travis_time_finish
+travis_fold end after_failure.1
+
+start_section "failure.tail" "${RED}Failure output...${NC}"
+tail -n 1000 output.log
+end_section "failure.tail"

.travis/after_success.sh

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+#!/bin/bash
+
+source .travis/common.sh
+set -e
+
+# Close the after_success fold travis has created already.
+travis_fold end after_success
+

.travis/common.sh

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+# Some colors, use it like following;
+# echo -e "Hello ${YELLOW}yellow${NC}"
+GRAY='\033[0;30m'
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[0;33m'
+PURPLE='\033[0;35m'
+NC='\033[0m' # No Color
+
+SPACER="echo -e ${GRAY} - ${NC}"
+
+export -f travis_nanoseconds
+export -f travis_fold
+export -f travis_time_start
+export -f travis_time_finish
+
+function start_section() {
+	travis_fold start "$1"
+	travis_time_start
+	echo -e "${PURPLE}OpenFPGA${NC}: - $2${NC}"
+	echo -e "${GRAY}-------------------------------------------------------------------${NC}"
+}
+
+function end_section() {
+	echo -e "${GRAY}-------------------------------------------------------------------${NC}"
+	travis_time_finish
+	travis_fold end "$1"
+}
+
+# For Mac OS, we use g++-8 and gcc-8 as default compilers
+if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
+  export CC=gcc-8
+  export CXX=g++-8
+  # export PATH="/usr/local/opt/bison/bin:/usr/local/bin:$PATH"
+  # export PATH="/usr/local/opt/qt/bin:$PATH"
+  # Install header files in Mojave, if not gcc-4.9 cannot spot stdio.h
+  sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target /
+else 
+  # For linux, we use g++-6 and gcc-6 as default compilers
+  #export CC=gcc
+  #export CXX=g++
+fi
+

.travis/install.sh

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+#!/bin/bash
+
+source .travis/common.sh
+set -e
+
+# Git repo fixup
+#start_section "environment.git" "Setting up ${YELLOW}git checkout${NC}"
+#set -x
+#git fetch --tags
+#git submodule update --recursive --init
+#git submodule foreach git submodule update --recursive --init
+#set +x
+#end_section "environment.git"
+
+$SPACER
+

.travis/script.sh

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+#!/bin/bash
+
+source .travis/common.sh
+set -e
+
+$SPACER
+
+start_section "OpenFPGA.build" "${GREEN}Building..${NC}"
+if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
+  make -j2
+else 
+# For linux, we enable full package compilation
+  make -j8
+fi
+end_section "OpenFPGA.build"
+
+$SPACER
+
+