[teamcity/build] Fix a bug where CONFIGURE_FLAGS would not parse multiple flags correctly
Summary:
Discovered in our logs: https://build.bitcoinabc.org/viewLog.html?buildId=16886&buildTypeId=BitcoinABC_Master_BitcoinAbcMasterAsan&tab=buildLog&_focus=87#_state=87
(see the malformed configure output: sanitizers = address --disable-ccache)
Test Plan:
CONFIGURE_FLAGS="--with-sanitizers=address --disable-ccache" ./build.sh # Observe configure output is correct: configure: running /bin/bash ../../../src/univalue/configure ... '--disable-ccache' ... configure: running /bin/bash ../../../src/secp256k1/configure ... '--disable-ccache' ... ... sanitizers = address
Reviewers: #bitcoin_abc, deadalnix
Reviewed By: #bitcoin_abc, deadalnix
Differential Revision: https://reviews.bitcoinabc.org/D3721